I had repeated difficulty too but I simply emailed a calm and polite enquiry to support at wavemachinelabs and they promptly sent me a link to the bonus material. Problem solved! So, @AudioManip, no need to be offensive, eh?

I had issues with the first 2 email addresses I tried. I finally used a third and it worked to get the content. I am signed up for updates with all three though. Only a joker who has never been to this forum would make accusations.

As I mentioned earlier, anyone having issues with the registration system should e-mail us directly or call us. We will provide the bonus content link right away. Email info at drumagog dot com or call 877-318-9283

As wrong as it seemed, I followed the directions and just copied the zip folder into the root directory, taking note of the original size of the IR directory. Nothing seemed to happen. I quit and restarted Auria. Still nothing. I went into the Auria store and "restored my purchases". I'm not sure if that did it or if it just needed time, but suddenly iTunes started moving everything into the correct place, expanded some files after the move, and erased the original zip file. I now have the bonus content installed properly. Does anyone know if any of this is redundant with the files for sale in the Auria store?

It's been in every version since 1.10. It disappears once you register Auria. When you first install Auria, a box pops up asking if you want to register your copy, and get a link for bonus content. if you dismiss the box (by pressing "Later"), you can go back to the box by choosing the "Bonus Content" entry in the main menu. Once you register, this goes away (because you already registered).